You should reach out to @Elliott Milek, he's a savvy cross border accountant who also invests in US real estate, and resides in the Ottawa area.    

My failure on my part was to build a solid team before flying oversea Account Closed   Yes, the LLC is set up that way she can do the signing. 

If you have taken those plan documents to Solera and opened a trust account for your Solo 401(k), then you have a functional plan.Of course, the key to operation and usage of a Solo 401(k) is having access to appropriate guidance, so that you understand what you have, how to administer the plan, and what you can and cannot do as far as executing plan investments so as to remain within the IRS rules. 

Make sure, you have the right to evict - Tenants must have relationship with you - sign the transfer PM letter with new payment account or mailing address.I wouldn't give the envelops - that's overkill.

Due to the nature of property managemnet business which the accounting can get a bit complicated, regardless of which software you choose, I think it'll have some mechanical and tedious nature to it. 

So if I get let's say 20 properties, and I'm managing them under some online software system, doing the accounting through quickbooks, should I keep separate bank accounts for each property? 

If your tenants have bank accounts and a smartphone, but have them pay you via Google Pay, Venmo, Apple, or straight out of their bank account into yours. 

You need an operating account fund for unexpected maintenance issues, dips in occupancy, etc., which can be 1% to 5% of the purchase price (depending on the current condition).If you are funding the renovations out-of-pocket, you will need to raise that.

Plus, during the restoration/renovation process, if unforeseen things are discovered, they'll submit a supplemental claim to account for any additional cost.

In short, she was not truthful or accountable.